FRESH WATER ALG>E. 



PLATE XVIII. 



■y*!J'^',i/. 



AFTER NATURE Bv OR H C.VyOOD 



T SINCLAIR A SOM. rhilAEjELPmia 



Fig. 1. PRINGSHEIMM INAEQUALE. 

 •' 2. OEDOGONIUM MIRABILE 

 " 3. OEDOGONIUM ECHINATUM. 



Fig .1 BULBOCH/€TE IGNOTA. 

 " 6 BULBOCH/CTE DUMOSA. 

 " 7 CONFERVA. 



